Moderate climbing and river crossings would try monrovia trail its easier no climbing
It's 1.7 miles in, so around 45 mins to 1 hour in. Trail is easy enough.
Take note no strollers occasional ruff and rock formations, would be mostly moderate. Had seen parents use the baby backpack or chest pack. I've taken family members who are not as healthy or used to these fun activities and had to stop for rest it was close an hour. Also depending where you park as well, so an hour to 1 1/2 or so. Good luck and enjoy the green forest.
If u go early ..u can park at the top of the parking..will take u 15 mins
Id rate the trail as moderate it'll probably take you about 45 minutes to get to the waterfall.
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